diff -u b/core/includes/common.inc b/core/includes/common.inc
--- b/core/includes/common.inc
+++ b/core/includes/common.inc
@@ -280,7 +280,7 @@
     }
   }
   else {
-    $profile = Settings()->get('install_profile') ?: 'standard';
+    $profile = settings()->get('install_profile') ?: 'standard';
   }
 
   return $profile;
diff -u b/core/includes/install.core.inc b/core/includes/install.core.inc
--- b/core/includes/install.core.inc
+++ b/core/includes/install.core.inc
@@ -1237,7 +1237,7 @@
   // Remember the profile which was used.
   $settings['settings'] = array(
     'install_profile' => (object) array(
-      'value'    => $install_state['parameters']['profile'],
+      'value' => $install_state['parameters']['profile'],
       'required' => TRUE,
     ),
   );
diff -u b/core/includes/update.inc b/core/includes/update.inc
--- b/core/includes/update.inc
+++ b/core/includes/update.inc
@@ -448,7 +448,7 @@
     $settings = array(
       'settings' => array(
         'install_profile' => (object) array(
-            'value'    => $old_variable,
+            'value' => $old_variable,
             'required' => TRUE,
         ),
       )
interdiff impossible; taking evasive action
reverted:
--- b/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php
+++ a/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php
@@ -779,22 +779,6 @@
     $this->settingsSet('cache', array('default' => 'cache.backend.memory'));
     $parameters = $this->installParameters();
     install_drupal($parameters);
-
-    // Set the install_profile so that web requests to the requests to the child
-    // site have the correct profile.
-    $settings = array(
-      'settings' => array(
-        'install_profile' => (object) array(
-          'value'    => $this->profile,
-          'required' => TRUE,
-        ),
-      ),
-    );
-    $this->writeSettings($settings);
-    // Override install profile in Settings to so the correct profile is used by
-    // tests.
-    $this->settingsSet('install_profile', $this->profile);
-
     $this->settingsSet('cache', array());
     $this->rebuildContainer();
 
unchanged:
--- a/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php
+++ b/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php
@@ -786,6 +786,22 @@ protected function setUp() {
     $this->settingsSet('cache', array('default' => 'cache.backend.memory'));
     $parameters = $this->installParameters();
     install_drupal($parameters);
+
+    // Set the install_profile so that web requests to the requests to the child
+    // site have the correct profile.
+    $settings = array(
+      'settings' => array(
+        'install_profile' => (object) array(
+          'value' => $this->profile,
+          'required' => TRUE,
+        ),
+      ),
+    );
+    $this->writeSettings($settings);
+    // Override install profile in Settings to so the correct profile is used by
+    // tests.
+    $this->settingsSet('install_profile', $this->profile);
+
     $this->settingsSet('cache', array());
     $this->rebuildContainer();
 
diff -u b/core/modules/system/lib/Drupal/system/Tests/Upgrade/BareMinimalAnonymousUpgradePathTest.php b/core/modules/system/lib/Drupal/system/Tests/Upgrade/BareMinimalAnonymousUpgradePathTest.php
--- b/core/modules/system/lib/Drupal/system/Tests/Upgrade/BareMinimalAnonymousUpgradePathTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Upgrade/BareMinimalAnonymousUpgradePathTest.php
@@ -34,7 +34,7 @@
         'required' => TRUE,
       ),
       'install_profile' => (object) array(
-        'value'    => $this->profile,
+        'value' => $this->profile,
         'required' => TRUE,
       ),
     );
diff -u b/core/modules/system/lib/Drupal/system/Tests/Upgrade/BareMinimalNoConfigUpgradePathTest.php b/core/modules/system/lib/Drupal/system/Tests/Upgrade/BareMinimalNoConfigUpgradePathTest.php
--- b/core/modules/system/lib/Drupal/system/Tests/Upgrade/BareMinimalNoConfigUpgradePathTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Upgrade/BareMinimalNoConfigUpgradePathTest.php
@@ -42,7 +42,7 @@
     );
     $settings['settings'] = array(
       'install_profile' => (object) array(
-        'value'    => $this->profile,
+        'value' => $this->profile,
         'required' => TRUE,
       ),
     );
diff -u b/core/modules/system/lib/Drupal/system/Tests/Upgrade/UpgradePathTestBase.php b/core/modules/system/lib/Drupal/system/Tests/Upgrade/UpgradePathTestBase.php
--- b/core/modules/system/lib/Drupal/system/Tests/Upgrade/UpgradePathTestBase.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Upgrade/UpgradePathTestBase.php
@@ -152,7 +152,7 @@
     $settings = array(
       'settings' => array(
         'install_profile' => (object) array(
-          'value'    => $install_profile,
+          'value' => $install_profile,
           'required' => TRUE,
         ),
       ),